In May 1891, Heinrich Ehrhardt in Düsseldorf, Germany, patented a locking collar with an elongated hole on the underside and a "nose" on the front. The elongated hole allows the handle "nose" to drop down when it's on the top of the shank.

On this wide shank you found the twelve astrological signs.

With this corkscrew I started my collection in December 1999.

material: brass, steel, wood

markings:none

Another, very popular corkscrew with a locking device at the handle. A German version shown in German catalogues as Reissmann's patent

material: steel

markings:
none

This is a modern version from the

ZACK company, Germany

with an triangular frame.

I like this design and the surface finish of the metal. It looks a bit spacy.....doesn't it?

material: steel?, plastic

markings:none

This is an older version of a locking revolving collar corkscrew.

Heinrich Ehrhardt has registered this design already in Feb.1891.

offen called: THE CHALLENGE

It does not have the weighted nose and has to be locked and unlocked manually.

material: steel

markings:THE CHALLENGE

with operating directions

Corkscrew with a swivel-over collar with heavy nose, based on H. Ehrhardts patent from 1891. This patent rights were sold to G. Reismann